[SOLVED] Boot Loop : MSI B550A PRO, Ryzen 3800x , Giga RTX3070 will not boot. Once Login is about to show, hard reboot.

[Sidchip]

I was playing a game, and all of a sudden, boom, hard restart. Just D3, nothing too crazy on Graphics.

Using M.2 for Win10. Another M.2 for storage
GIgabyte RTX3080.
32GB G.SKILL 3600 CAS18 ram
850W PSU
Ryzen 7 3800x
MSI B550A PRO mobo

Now, it POSTs OK, tries to start windows, and as soon as the circling dots are about to show a login screen, hard reboot.

USB recovery, shows Windows logo for a few seconds, hard reboot.

Tried Ubuntu, can't get to login either. Reboots and it appears (though it scrolled very fast) that when it was showing something with SATA it rebooted.

Latest Memtest booted and tested good.

Tried removing all ram but one stick, same
Tried removing other M.2 same
Tried booting from a SATA SSD (ubuntu) - same.
Tried a different video card (an older 1060) - same.
Tried a different PSU - This I wasn't expecting, it didn't boot at all.
Cleared CMOS. Same
Updated BIOS to latest - Same.
Reseated everything including CPU- same.

I think I've run out of steps here..

Does this seem like a mobo issue? I'm struggling to se what else it could be... This mobo is about 1.5 years old.

Any opinions or ideas would be greatly appreciated.

Thank you!
Sid.

 

[rgd1101]

brand and model of the psu ?

 

[Sidchip]

It's a Gigabyte P850GM 850w

 

[Satan-IR]

That is one of the exploding models brought to you courtsey of Gigabyte. See here. I'd replace that PSU ASAP. They later said they fixed the models but I'd take that with a grain of salt.

I hope the PSU which porbbaly failed didn't damage anything else. The fact that it POSTs and you see Windows loading before reboots probably means other parts are OK. For now.

Inspect the PSU and see if you can notice damage popped caps or mosfets etc. Do not open it up as it can be dangerous to handle innards of a PSU and even deadly, electrocution hazard.

I would not start any system with that PSU after the sudden reset.

 

[Sidchip]

Thanks... I just did some research on that PSU and found that as well...

Now It's a real chicken and egg scenario... Did this PSU fry this mobo? Or can I get away with just replacing the PSU... but then could this mobo fry a new PSU lol... sigh I guess the safest bet is to replace both, and try to get this older PSU recalled (seller won't do it, I gotta go through Gigabyte)

 

[Satan-IR]

No problem. If the MOBO is indeed fried it's probably the PSU killed it and not vice versa.

If you can get away with just replacing the PSU or not depends on whether you can determine if it's the culprit or dead/failing. Simplest way is to try and work the system as is now with a known working PSU.

If with a working PSU it works you're golden. If it doesn't maybe MOBO (also maybe other components might have fallen victim).

 

[Sidchip]

Argh.

Replaced the MOBO with an AORUS ELITE WIFI X570, and replaced the PSU with a Seasonic 650.

Was crossing my fingers, but no luck.

What is super interesting is that I can boot into Ubuntu 16 through bootable USB no problem, but Windows 10 Installation media fails at exactly the same point.... I wish I could get some textmode display of what was going on during the boot process...

It's the strangest thing, it gets to exactly this one point, and the fans stop spinning, the CPU is like halted and it reboots.

Tried many configurations of the RAM, tried some settings in the BIOS - namely to do with the "low load shutdown" (I disabled that / added a virtual load)

Using a different Video card as well....

If this is the CPU then damn, I've pretty near bought a new PC.

New version of MemTest works well. The older textmode version halts at 66% but I've read it may not work with the later generation Ryzen and ram. Anyways I've got it working well with the latest version of memtest...

Really stumped here...

 

[Satan-IR]

I gather there's no error shown?

The fac that It fails at a certain point may be because an issue with the ISO/image of the installation media? See if making the bootable installation media/ISO with Media Creation Tool again would resolve this.

Also wait and see if others have any other input.

 

[Sidchip]

I gather there's no error shown?

The fac that It fails at a certain point may be because an issue with the ISO/image of the installation media? See if making the bootable installation media/ISO with Media Creation Tool again would resolve this.

Also wait and see if others have any other input.

I appreciate your help and input, thank you.

I have tried from a few USB's. After some further investigation, as soon as the Windows dot-circle appears, both the case fan and the CPU fan stop spinning... then seconds after it reboots...

I've also tried enabling Secure Boot, and Disabling secure boot. Ever so strange it boots Ubuntu but not Windows... I'm starting to wonder if CPU is no good. :|

 

[Satan-IR]

I appreciate your help and input, thank you.

I have tried from a few USB's. After some further investigation, as soon as the Windows dot-circle appears, both the case fan and the CPU fan stop spinning... then seconds after it reboots...

I've also tried enabling Secure Boot, and Disabling secure boot. Ever so strange it boots Ubuntu but not Windows... I'm starting to wonder if CPU is no good. :|

OK different USB flash drive but same image/ISO? The image might be corrupted or not working somehow. If this is the case simply making another bootable USB with broken image would have same result.

The fact that with a bootable Ubuntu system POSTs and boots and is functional makes the CPU not working (or any other piece of hardware for that matter) very very unlikely.

Is the system functioning normally in the bootable Ubuntu? Display, sound, storage, networking etc?

 

[Sidchip]

OK different USB flash drive but same image/ISO? The image might be corrupted or not working somehow. If this is the case simply making another bootable USB with broken image would have same result.

The fact that with a bootable Ubuntu system POSTs and boots and is functional makes the CPU not working (or any other piece of hardware for that matter) very very unlikely.

Is the system functioning normally in the bootable Ubuntu? Display, sound, storage, networking etc?

Aha. The plot thickens... The Ubuntu 16.04 media I was using was 32 bit. The Windows installation I was using was of course 64 bit. I tried a 64 bit Ubuntu 20.04 USB - same thing reboots everytime.

I just created a 32 bit Windows 10 installation media... and it works.

This is now either a problem with the RAM or with the CPU - these are the only 2 components I haven't changed. I have played around with all 4 sticks individually (4x8 G.SKILL) with 64 bit bit Win install and no dice..

 

[Satan-IR]

Yeah that might be a good idea to check RAM modules, one at a time with memtest and see if they have issue and throw errors.

 

[Sidchip]

No errors on latest memtest. All 4 check out fine. Simply won’t boot 64 bit Ubuntu or Windows. So strange.

 

[Satan-IR]

Just to be clear you checked RAM one module/stick at a time?

Also what exactly do you mean won't boot 64 bit Windows? Just so we're clear on this: you can't boot from a USB flash prepared for Windows installation.

Do you get any error message when trying to install? Does it say something about your drive not being compatible and is there mention of GPT etc?

Also what is the storage you trying to install to? If it contained previous Windows 32 bit installation you can't install 64 on top of that. It has to be a clean installtion, i.e. the drive (partition) has to be formated (so that old Windows is gone which is done by Windows installation media you have on the USB) and Windows 10 creates new partitions and installs.

 

[Sidchip]

Update.. New CPU seems to have solved this issue. I haven't tried going back to the MSI board but a 5800x seems to be running %100 booting into 64bit Windows and Ubuntu.